p-Toluenesulfonic acid monohydrate → 2-[5-(2,2-Dimethylpropoxy)pyridin-2-yl]-4-(1H-1,2,3-triazol-1-yl)-1,2-dihydro-3H-pyrazol-3-one

HRID 242281Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 242281
C(O[C:4](=[O:15])[C:5]([N:10]1[CH:14]=[CH:13][N:12]=[N:11]1)=[CH:6][N:7](C)C)C.[CH3:16][C:17]([CH3:29])([CH3:28])[CH2:18][O:19][C:20]1[CH:21]=[CH:22][C:23]([NH:26]N)=[N:24][CH:25]=1.O.C1(C)C=CC(S(O)(=O)=O)=CC=1>C(O)C>[CH3:16][C:17]([CH3:29])([CH3:28])[CH2:18][O:19][C:20]1[CH:21]=[CH:22][C:23]([N:26]2[C:4](=[O:15])[C:5]([N:10]3[CH:14]=[CH:13][N:12]=[N:11]3)=[CH:6][NH:7]2)=[N:24][CH:25]=1

Komponenten

5

Edukt 3

HCID 521998p-Toluenesulfonic acid monohydrateHCID 552791605-(2,2-Dimethylpropoxy)-2-hydrazinopyridineHCID 66726233Ethyl 3-(dimethylamino)-2-(1H-1,2,3-triazol-1-yl)acrylate

Produkt 1

HCID 596035532-[5-(2,2-Dimethylpropoxy)pyridin-2-yl]-4-(1H-1,2,3-triazol-1-yl)-1,2-dihydro-3H-pyrazol-3-one

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 702EthanolLösungsmittel

Versuchsvorschrift

171 mg (0.8 mmol) of the compound from Example 3A and 455 mg (purity 35%, 0.8 mmol) of the compound from Example 12A are initially introduced into 7 ml ethanol. 31 mg (0.2 mmol) p-toluenesulfonic acid monohydrate are added and the mixture is stirred under reflux for 64 h. Thereafter, it is concentrated and the residue is purified by means of preparative HPLC (RP18 column; mobile phase: acetonitrile/water gradient with addition of 0.1% TFA). The product fractions are combined, the solvent is removed and the residue is dried under a high vacuum.

Aufarbeitung

  1. temperatureunder reflux for 64 h
  2. concentrationThereafter, it is concentrated
  3. customthe residue is purified by means of preparative HPLC (RP18 column; mobile phase: acetonitrile/water gradient with addition of 0.1% TFA)
  4. customthe solvent is removed
  5. customthe residue is dried under a high vacuum

Quellen und Nachweise

ORD-Eintrag
ord-991700ffa60342eda990b62b56866fc5
Quelldatensatz
uspto-grants-2014_02
Patentnummer
US08653111B2

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